China News Service, March 28. The State Council’s Joint Prevention and Control Mechanism held a press conference on the 28th to introduce the new crown vaccination and supply guarantee.
Respond to questions about vaccination contraindications, vaccine protection period, and whether people who have already received the new crown vaccine need to be vaccinated again.
Data map: New crown pneumonia vaccination.
Photo by China News Agency reporter Tian Yuhao
For the contraindications of vaccination:
Wu Liangyou, deputy director of the CDC of the National Health Commission, pointed out that the new coronavirus vaccine used in my country has clarified the vaccination taboos and vaccination precautions. Among them, the vaccination taboo is the current situation where the vaccine cannot be vaccinated. By screening the physical condition, From the perspective of protecting health and safety, if vaccination is indeed contraindicated, COVID-19 vaccination services cannot be provided.
If it is a situation listed in the precautions, it is recommended that you inform the vaccination doctor truthfully before vaccination, so that the doctor can determine whether it is suitable for vaccination against the new crown virus after a full assessment.
To address the issue of vaccine protection period:
Wang Huaqing, chief expert of the China Centers for Disease Control and Prevention's immunization program, said that the new coronavirus vaccine is a new vaccine.
At present, the antibody level is monitored for more than six months.
"But antibodies are not the only indicator of protection. There are other factors that play a role in the process of vaccines. Therefore, follow-up studies on the durability of vaccines are needed to determine how long the protection period is." Wang Huaqing pointed out.
In response to the question of whether people who have already received the new crown vaccine need to be vaccinated again:
Zhang Yuntao, vice president of Sinopharm Group China Biology, said that in the entire clinical research process, we now observe that the durability of vaccine protection is about half a year, and the durability of neutralizing antibodies is also about half a year.
In the clinical process of our overall design, we designed enhanced needle vaccination to observe the level of antibody persistence and protection. According to the preliminary results obtained, the enhanced needle can effectively increase the titer of neutralizing antibody and the durability of antibody. Effectively improve the vaccine's ability to resist mutation.
Zhang Yuntao pointed out that in the future, we will carry out Phase III clinical studies overseas to continuously observe the persistence of antibodies and the persistence of protection. Is there a need for booster vaccination?
When will you come to fight?
We still have to answer based on the results of the next three phases of clinical research.